ESPICULAS DE ESPONJAS PDF

ESPICULAS DE ESPONJAS PDF

O Paleolago Cemitério, Catalão, Goiás, é um depósito lacustre rico em espículas de esponjas continentais. Essas espículas, que estão presentes em três. This Pin was discovered by Joelma Martins Fonseca. Discover (and save!) your own Pins on Pinterest. A sustentação das células das esponjas é feita por lamentos calcários chamados de espículas. Nas esponjas também não há sistemas responsáveis pelas.

Author: Dakazahn Dukus
Country: Honduras
Language: English (Spanish)
Genre: Business
Published (Last): 24 March 2013
Pages: 40
PDF File Size: 7.85 Mb
ePub File Size: 6.39 Mb
ISBN: 126-7-29262-125-1
Downloads: 43313
Price: Free* [*Free Regsitration Required]
Uploader: Vudobar

Metania spinata Volkmer-Ribeiro Spongilla espojas Carter Three slides were prepared for each horizon subsample. Considering the range of overlap of the error bars of these two geochronologies, this layer is believed to have an age between 29, and 31, years BP.

Espícula (esponja)

According to these authors, the species H. They also pointed to a relationship between this deposit and transgressive events prior to the studied formation.

We identified 25 spongofacies horizons caused by sponge assemblages typical of a lentic environment, dated from at esponjad 39, years BP.

Except for the species C. The ages obtained by N.

  DIYABETIK RETINOPATI EVRELERI PDF

Redescription of two Neotropical species. J Coastal Res The applied methodology revealed the evolution of this system, with the greatest sponge production related to espnojas enrichment of organic matter, which reaches its culmination in the marsh environment.

Radiospongilla amazonensis Volkmer – Ribeiro and Maciel The freshwater sponges in some peat-bog ponds in Brazil. Spongofacies as in Layer 3.

However, Volkmer-Ribeiro and Motta pointed out that the species of the genus Heterorotulahitherto endemic to Australia, appear in environments that are seasonally exposed to drought and form delicate crusts on the roots of aquatic vegetation, with a consistency ranging from fragile to hard, but brittle. Spongofacies with spicules of M.

Volkmer-Ribeiro and Maciel In addition, we interpret a strong lotic espomjas at the beginning of the paleolake’s history, as indicated by the species C.

New fresh-water sponges from Amazonian waters.

Inventary of the Sponge Fauna of the cemitério Paleolake, Catalão, Goiás, Brazil

Sponge spicules in sediments indicate evolution of coastal exponjas bodies. La sedimentation lacustre indicateur de changements des paleoenvironments aucours des The results presented herein correspond to an unpublished component of the Master’s thesis of the senior author.

  AN INTERRUPTED TAPESTRY MADELINE HUNTER PDF

Nuevos aportes al conocimiento de las esponjas argentinas. Verh Internat Verein Limnol Rev Bras Paleontol 9 3: Roberto Iannuzzi and Dr.

Espiculas de esponja | Biologia de inverterbrados | Pinterest

Sociedade Brasileira de Paleontologia, p. Proc Acad Nat Sci Phila 5: They are sessile and live attached to a submerged or an emergent substrate, such as macrophyte roots, rocks, branches of riparian vegetation or tree trunks in regions that experience seasonal flooding, such as the floodplains of the major Amazonian rivers Volkmer-Ribeiro and Pauls Trochospongilla variabilis Bonetto and Ezcurra de Drago Espicklas Porifera, Demospongiae redefined.

Rare spicules of E.

How to cite this article. When the drainage is reduced and the production of the sponge is voluminous, the accumulation of these spicules in sediments can produce biosiliceous mineral deposits known as spongillites Volkmer-RibeiroVolkmer-Ribeiro and Motta